As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER LANDING GEAR RETRACTION ON TAKEOFF, RED LEFT GEAR LIGHT AND GREEN LEFT GEAR LIGHT REMAINED ILLUMINATED. RECYCLED GEAR RETRACTION IN UP AND OFF POSITION STILL SHOWED SAME LEFT GEAR LIGHTS AS BEFORE. REMOVED AND REPLACED LT MLG UPLOCK ACTUATOR PER MM.